Do i really have to???? PLEASE HELP 10 points!?

I live in Washington, USA. and im almost 16 in a month. i don't like my dad and i don't want to see him! he always calls me fat and makes me work out and makes me watches like fat people videos and always makes me cry and i remember one time he made a big deal about how he was "messing with my brother and i" (my brother was almost 19 and i was 15 in like a week or 2) he was basically pushing my head into his stomach so i couldn't breath so i was like moving around and squirming and i accidentally ALMOST pulled his pants down. What does he do? he goes outside tells on his girlfriend and i was in bed and my dad wakes me and my brother up and we had to stand and listen while shes outside drinking stupid wine by the fire pit outside saying "what did you do wrong to ur dad" and i was like "what?" and shes like "you were trying to pull his pants down" and i was like "uh he was suffocating me!" and she said "i don't wanna hear excuses" and making a big deal about it making me almost cry because i hate them so much! he spoils his fiance and sometimes i think shes using him for the money. i wanted a laptop for my birthday because he forgot about it 2 weeks late and he said he couldn't buy me a better one then a mini laptop because he was "low on money" he just spent $25,000 on his BACKYARD with the hottub, fire pit, and a new paved deck thing and a $800 black pearled necklace for her. but when i was 14 (in September 2009 and my bday is in august by the way) i stopped seeing him and he went to court in July 2010 and it cost my mom and dad each $1,500 and my dad is basically rich and my mom and i don't have a lot of money and live in a apartment. and i started seeing him the whole summer and spent a few weeks and then stopped seeing him AGAIN in November 2010 and now its 2011 and almost July and he wont leave my mom alone and he texted my mom if i dropped out of my high school because i got very sick with pneumonia transferred to online school and basically failed sophomore year. and drove past my apartment. Anyways i don't want to see him! all my friends tell me if im older then 13 and i shouldn't have to see my dad because its a law and they don't see their dad(a lot of my friends hate their dad) my mom is telling me i have to or she will go to jail or whatever. i don't want to wait til im 18!!! they said i can go to counseling but i will only do that unless my dad is making me see him again for sure. i know he will probably text me one of these days! what can i say to him to make him leave me alone! i cant cuss or be to rude or he will take my mom to court! Thanks!